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填空题 : 把以下单词填写到正确的空格里 1 、 interest 2 、 checking account. 3 、 savings account 4 、 safe-keeping 5 、 writes a check 6 、 traveler's checks 7 、 loan 8 、 convenient 9 、 certain percentage 10 、 lends Banks were developed to keep people's money safe and to make it available when they needed it. Since money was invented, people have been borrowing and lending it. A modern bank accepts people's money for 1 、 _ _________ . It also lends money and offers many other services. The experience of a businessman will show some of these. James Jones has a furniture store and buys his goods from different parts of the country. It isn't 2 、 ____________ for him to send money through the mail, so he goes to the bank and opens a 3 、 ___________ . He puts his money in the bank regularly, and the bank keeps it until he writes checks for that amount. When Mr. Jones orders furniture from the Modern Furniture Company in another city, he simply 4 、 _________ . This check is as good as money to the owner of the company. The owner can take it to his bank and cash it, that is, he can get money for it. Now and then Mr. Jones deposits money in a savings account at the bank. The bank then uses this money and pays him a 5 、 __________ on each dollar every year. For example, if he deposits $ 1000 and the bank pays him 4 percent, he will have earned $ 40 by the end of the year. This payment is called 6 、 _ _________ . Mr. Jones can usually borrow from the bank if he needs money. He can arrange for a bank 7 、 __________ at the loan department. If the bank 8 、 __________ him money, he must pay interest for its use. Sometimes, instead of putting his money in a 9 、 _ _______ , Mr. Jones wants to invest it in some business firm, and he may ask the investment department of his bank for advice. Mr. Jones gets still other services from the bank. When he travels, he buys 10 、 ____________ from the bank instead of carrying money with him. And he can rent a safe-deposit box in the bank for his valuable papers and articles. It's hard to imagine that people could do business without the services of a bank.
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【单选题】在 Linux 系统 中,完整路径中的目录间分隔符是
A.
/
B.
\
C.
|
D.
-
【单选题】在Linux操作系统中,完整路径中的目录间分隔符是 ( )。
A.
/
B.
\
C.
|
D.
_
【简答题】一块厚0.025mm的方解石晶片,其表面与光轴平行,放置在两正交的偏振片之间。已知第一个偏振片的偏振化方向与晶片的光轴成45°角。现用白光垂直射入第一个偏振片,问经第二个偏振片透射的可见光谱中,缺少了哪些波长?假定双折射率n o -n e =0.172可看作常量。
【简答题】一块厚0.025mm的方解石晶片,其表面与光轴平行,放置在两正交的偏振片之间.已知第一个偏振片的偏振化方向与晶片的光轴成45°角.现用白光垂直入射第一个偏振片,问经第二个偏振片透射的可见光谱中,缺少了哪些波长?假定双折射率n o -n e =0.172可看作常数.
【简答题】一块厚0.025mm的方解石晶片,其光轴与表面平行,放置在两正交偏振片之间。从第一偏振片出来的线偏振光垂直入射到品片上,振动方向与晶片的光轴方向夹45°。求:
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正确
B.
错误
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【简答题】从B栏中找出适合A 栏中问句的相应答语。 A (     )1. How do you come to school? (     )2. What did you do yesterday? (     )3. How many pens do you have? (     )4. What will you do? (     )5. How much are they? B A. I we...
【简答题】一块厚0.025mm的方解石晶片,其光轴与表面平行,放置在两正交偏振片之间。从第一偏振片出来的线偏振光垂直入射到品片上,振动方向与晶片的光轴方向夹45°。求: (1)透过第二个偏振片的光在可见光谱(400~700nm)中缺少哪些波长? (2)若两偏振片的振动方向互相平行,则透射光中缺少哪些波长?假定双主折射率之差n o -n e =0.172可看作常数。
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